compiler-rt/test/asan/TestCases/Darwin/linked-only.cpp

   1 // Main executable is uninstrumented, but linked to ASan runtime.
   2 // Regression test for https://code.google.com/p/address-sanitizer/issues/detail?id=357.
   3
   4 // RUN: %clangxx -g -O0 %s -c -o %t.o
   5 // RUN: %clangxx_asan -g -O0 %t.o -o %t
   6 // RUN: %run %t 2>&1 | FileCheck %s
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11
  12 #include "sanitizer/asan_interface.h"
  13 #if __has_feature(ptrauth_calls)
  14 #  include <ptrauth.h>
  15 #endif
  16
  17 void test_shadow(char *p, size_t size) {
  18   fprintf(stderr, "p = %p\n", p);
  19   char *q = (char *)__asan_region_is_poisoned(p, size);
  20   fprintf(stderr, "=%zd=\n", q ? q - p : -1);
  21 }
  22
  23 int main(int argc, char *argv[]) {
  24   char *p = (char *)malloc(10000);
  25   test_shadow(p, 100);
  26   free(p);
  27   // CHECK: =-1=
  28
  29   char *mainptr;
  30 #if __has_feature(ptrauth_calls)
  31   mainptr = (char *)ptrauth_strip((void *)&main, ptrauth_key_return_address);
  32 #else
  33   mainptr = (char *)&main;
  34 #endif
  35   test_shadow(mainptr, 1);
  36   // CHECK: =-1=
  37
  38   test_shadow((char *)&p, 1);
  39   // CHECK: =-1=
  40
  41   return 0;
  42 }